Subject: Memory Management
From: [EMAIL PROTECTED]
Date: Tue, 22 Nov 2005 09:30:59 -0000
From last few days I am working on palm C++. Initially I used to
be a C++ Programmer. I have few querries regarding to Memory Handling.
I have one Engine for C++ platforms. It just does some task for me.
I am reusing that in my Palm Application. I wanted to use the
classes( Engine ) those were already developed by me for other
platforms. So I changed the extension my AppMain.c to AppMain.cpp.
And started using my classes.
1. Whatever I am doing in my Engine is purely Object Oriented and I
have handled memory according to C++. i.e. "new" and "delete". But
As Palm documentation suggest that you should use memory using
handles or ptrs. Is it the case that I must use MemHandle to deal
with my memory? Means I dont want to change my C++ code that I have
written for other platforms.
2. I am getting following error:
HeapHandlePool.c(1418): HeapMgr: 0x475430B8 - Chunk over-locked
There is already a lot of discussion on this topic. I am not using a
Memory Handler functions in my application. i.e. I am not Locking
the memory anywhere but only in Drawing bitmaps. And I am unlocking
it. So what is the cause of this error?
Final Words: Can my application survive only on "new" and "delete"
of C++, not "Lock" and "Unlock"?
You can use "new" and "delete", but the implementation doesn't throw
an exception if "new" fails. Under the skin, "new" uses MemPtrNew.
So you have to make sure you don't use "new" if you don't have enough
heap memory.
There is a fix for this, where you can provide your own
implementation of "new" and "delete", but I can't remember where it
is documented. Try the KB and the archives.
Roger Stringer
Marietta Systems, Inc. (www.rf-tp.com)
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